[INFO] cloning repository https://github.com/whamcloud/thrussh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whamcloud/thrussh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhamcloud%2Fthrussh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhamcloud%2Fthrussh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e5ede756cedd2e4968bb69a56312f8315b2bcc5
[INFO] checking whamcloud/thrussh against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhamcloud%2Fthrussh" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/whamcloud/thrussh on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/whamcloud/thrussh
[INFO] finished tweaking git repo https://github.com/whamcloud/thrussh
[INFO] tweaked toml for git repo https://github.com/whamcloud/thrussh written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/whamcloud/thrussh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0886582b37a8e0d5b8147cbaf4ad86fa2dbd79ba7c083a35e408c0360c2b0794
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0886582b37a8e0d5b8147cbaf4ad86fa2dbd79ba7c083a35e408c0360c2b0794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0886582b37a8e0d5b8147cbaf4ad86fa2dbd79ba7c083a35e408c0360c2b0794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0886582b37a8e0d5b8147cbaf4ad86fa2dbd79ba7c083a35e408c0360c2b0794", kill_on_drop: false }`
[INFO] [stdout] 0886582b37a8e0d5b8147cbaf4ad86fa2dbd79ba7c083a35e408c0360c2b0794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 890694776d3c804e5463740f4e09df7d7e0a80e8e807bdda6e5316c0a66b7eec
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "890694776d3c804e5463740f4e09df7d7e0a80e8e807bdda6e5316c0a66b7eec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.62
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking whoami v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking libsodium-sys v0.2.6
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking mio v0.7.9
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking thrussh-libsodium v0.2.1 (/opt/rustwide/workdir/thrussh-libsodium)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking cryptovec v0.6.1 (/opt/rustwide/workdir/cryptovec)
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking yasna v0.3.2
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking thrussh-keys v0.20.3
[INFO] [stderr]     Checking thrussh-config v0.5.0 (/opt/rustwide/workdir/thrussh-config)
[INFO] [stderr]     Checking thrussh-keys v0.20.2 (/opt/rustwide/workdir/thrussh-keys)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> thrussh-keys/src/lib.rs:738:13
[INFO] [stdout]     |
[INFO] [stdout] 738 |         let mut rt = tokio::runtime::Runtime::new().unwrap();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> thrussh-keys/src/lib.rs:782:13
[INFO] [stdout]     |
[INFO] [stdout] 782 |         let mut core = tokio::runtime::Runtime::new().unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thrussh v0.32.5 (/opt/rustwide/workdir/thrussh)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
[INFO] running `Command { std: "docker" "inspect" "890694776d3c804e5463740f4e09df7d7e0a80e8e807bdda6e5316c0a66b7eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "890694776d3c804e5463740f4e09df7d7e0a80e8e807bdda6e5316c0a66b7eec", kill_on_drop: false }`
[INFO] [stdout] 890694776d3c804e5463740f4e09df7d7e0a80e8e807bdda6e5316c0a66b7eec